class question

[gkatz]

Hi;
watching the sencha video of the new class system I am still confused about some things:
1. the lifecycle of the objects: the video shows the use of the constructor method. looking at the sencha 2 code there's some code that uses initialize method (not sure what it does).
2. video shows using .initConfig(config); inside the constructor for the benefit of get/set/apply/etc. this worked for me for a component that does not inherit anything, once I used 'extend: ext.container' I got an exception (see below)
3. looking at some sencha code and extensions I mostly saw people using callparent([config]). is this the same?
4. I am somewhat confused and would appreciate your help
thanks

Uncaught TypeError: Cannot read property 'length' of undefined
Ext.define.applyActiveItemsencha-touch-all-debug.js:64642
(anonymous function)sencha-touch-all-debug.js:27352
Base.implement.initConfigsencha-touch-all-debug.js:4689
Ext.define.constructorMyContainer.js:8
Ext.apply.create.Classsencha-touch-all-debug.js:4947
Ext.application.launchapp2.js:7
Ext.define.onDependenciesLoadedsencha-touch-all-debug.js:29172
Ext.apply.requiresencha-touch-all-debug.js:7889
(anonymous function)sencha-touch-all-debug.js:3194
Ext.define.loadControllerDependencie

[mitchellsimoens]

constructor is the initial method that gets called when creating a component. initialize happens a little later so it just depends on what you need to do and where you can do it.

initConfig(config) will create the getters/setters and such but a component should have that called automatically so you may not have to. I would check to see if it is already there before I would call initConfig.

callParent will call the class that you are extending method so you don't loose functionality.